- oral, transdermal/patch, or injectable estrogens, progestins, estrogen analogs, estrogen agonists, estrogen antagonists, selective estrogen receptor modulators, or tibolone in the 3 months prior to randomization; treatment with intravaginal estrogens in doses higher than 0.3 mg of conjugated equine estrogen, or the equivalent, for more than 3 doses per week in the 3 months prior to randomization.